. Find the standard deviation of the set of data below. y+1, y+2, y + 5, y +9, y + 8.
A. 3.16
B. 3.53
C.
y + 3.16
D. y +3.53​

this is false ^.^ lol

place r′ so that qr′ is parallel to the tangent.

now we get that ∠r′py=∠pr′q, where y is on the tangent, on the opposite side of p from x.

also, because of the symmetry, ∠r′py=∠qpx.

finally, note that no matter where we place r, as long as it's on the correct arc, we have ∠prq=∠pr′q.

stringing all these equalities together, we end up with ∠prq=∠qpx.

this picture will show how its going to look like.

hope this by jack monhen